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The option shall vest as follows: 1,436 option shares on September 29, 2027 and the remaining option shares in 36 monthly installments thereafter through September 29, 2030, in each case subject to the Reporting Person's continued service through each vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents a grant of incentive stock option pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. The option shall vest as follows: 1,436 option shares on September 29, 2027 and the remaining option shares in 36 monthly installments thereafter through September 29, 2030, in each case subject to the Reporting Person's continued service through each vesting date."}],"balance_after":5744,"derivative":{"exercise_price":3.5,"expiration_date":"2036-09-29","underlying":"Common Stock","underlying_shares":5744},"source":{"system":"sec-edgar","filing":"0001213900-26-108175","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1918080/000121390026108175/ownership.xml","form_type":"4"}},{"id":4638331,"issuer":{"id":9903,"kind":"organization","name":"Deep Isolation Nuclear, Inc.","symbol":"DBHL"},"owners":[{"id":43200,"kind":"person","name":"Nelson Joseph Eugene","position":1,"cik":"0001879973","reported_name":"Nelson Joseph Eugene","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO and Treasurer"}}],"security":"Common Stock","published_at":"2026-10-09T00:33:22.000Z","date":"2026-10-06","kind":"grant","planned":false,"acquired":true,"shares":3577,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Represents a grant of restricted stock units (\"RSUs\") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest as follows: 894 RSUs on September 29, 2027, 895 RSUs on September 29, 2028, 894 RSUs on September 29, 2029 and 894 RSUs on September 29, 2030, in each case subject to the Reporting Person's continued service through each vesting date."}],"balance_after":103577,"source":{"system":"sec-edgar","filing":"0001213900-26-108175","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1918080/000121390026108175/ownership.xml","form_type":"4"}},{"id":758905,"issuer":{"id":9903,"kind":"organization","name":"Deep Isolation Nuclear, Inc.","symbol":"DBHL"},"owners":[{"id":43200,"kind":"person","name":"Nelson Joseph Eugene","position":1,"cik":"0001879973","reported_name":"Nelson Joseph Eugene","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock Option (right to buy)","published_at":"2026-05-29T15:08:25.000Z","date":"2026-05-27","kind":"grant","planned":false,"acquired":true,"shares":40000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents a grant of stock options pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. 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The options shall vest over a period of four years beginning on February 24, 2027, whereby 1/4th of the option shares shall vest on that date and 1/48th of the option shares shall vest monthly thereafter, subject to the Reporting Person's continued service through each vesting date."}],"balance_after":40000,"derivative":{"exercise_price":3,"expiration_date":"2036-02-24","underlying":"Common Stock","underlying_shares":40000},"source":{"system":"sec-edgar","filing":"0001213900-26-062731","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1879973/000121390026062731/ownership.xml","form_type":"4"}},{"id":758904,"issuer":{"id":9903,"kind":"organization","name":"Deep Isolation Nuclear, Inc.","symbol":"DBHL"},"owners":[{"id":43200,"kind":"person","name":"Nelson Joseph Eugene","position":1,"cik":"0001879973","reported_name":"Nelson Joseph Eugene","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-05-29T15:08:25.000Z","date":"2026-05-27","kind":"grant","planned":false,"acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"Represents a grant of 100,000 restricted stock units (\"RSUs\") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon vesting. The RSUs shall vest in equal annual installments of 25% over a period of four years beginning on February 24, 2027, subject to the Reporting Person's continued service through each vesting date."}],"balance_after":100000,"source":{"system":"sec-edgar","filing":"0001213900-26-062731","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1879973/000121390026062731/ownership.xml","form_type":"4"}},{"id":1062023,"issuer":{"id":7833,"kind":"organization","name":"Myseum.AI, Inc."},"owners":[{"id":43200,"kind":"person","name":"Nelson Joseph Eugene","position":1,"cik":"0001879973","reported_name":"Nelson Joseph Eugene","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Options (right to buy)","published_at":"2025-08-19T16:31:01.000Z","date":"2025-08-18","kind":"grant","planned":false,"acquired":true,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On August 18, 2025, the Reporting Person was granted options (\"Options\") to purchase up to 5,000 shares of the Registrant's common stock pursuant to the Registrant's Amended and Restated 2021 Equity Incentive Plan. 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